St. Stephen's GmbH is an owner managed Vienna advertising agency. For years St. Stephen's has played an important role in Austria's advertising scene and looks with pride on good and sustainable customer relationships with a great deal of success.

The agency was founded a good 30 years ago by Gerd Babits under the name C.S. Werbung, and after being taken over by BZW advertising company it was renamed as Strobelgasse advertising company and today trades under the name of Vienna's most important landmark, the St. Stephen's cathedral